HEIDENHAIN CNC PILOT 640 User Manual page 418

Smart.turn and din programming
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4
NE: Contour end block no. – end of contour section
Figures, free closed contour: No input
Open contour: last contour element
Contour consists of one element:
No input: Machining in contour direction
NS = NE programmed: Machining against the contour
direction
D: Start elem.no.
The direction of contour definition for figures is counterclockwise.
The first contour element for figures:
Circular slot: The larger arc
Full circle: The upper semicircle
Rectangles, polygons and linear slots: The orientation angle
points to the first contour element.
V: End: elem.no.
A: (Mill=0/PredrillPos=1)
NF: Position mark – reference at which the cycle stores the hole
positions (range: 1 to 127)
WB: Diameter rework
Program D and V to machine parts of a figure.
The cycle takes the diameter of the active tool into
account when calculating the hole positions. Therefore,
you need to insert the drill before calling G840 A1 ...
Program oversizes for calculating the hole positions and
for milling
Danger of collision!
G840 overwrites any hole positions without a confirmation prompt
that may still be stored at the Position mark NF. Danger of
collision during subsequent machining operations!
Observe the behavior of G840 during programming
418
NOTICE
DIN/ISO programming | Milling cycles
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017

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